Hello.
On the contrary, I have found N350 to be my 45acp powder of choice. With N350, I was able to safely reproduce factory load velocities in my stock H&K USP45 and G21. For some odd reason, N350 is super accurate in both guns. As for recoil, I notice very little added felt recoil with N350 versus N320. My advice is try a pound of N350 and see how it works for you. Good luck and safe shooting.
Keary